Cooling is imminent, how to determine the quality of car coolant?

Is car antifreeze the same as coolant? Engine coolant and antifreeze are not the same thing. Coolant is a liquid that can lower the temperature of the engine. It circulates within the engine's cooling system, carrying away excess heat generated during engine operation, allowing the engine to operate at normal working temperatures, thus providing a cooling effect. Antifreeze, on the other hand, is not entirely equivalent to coolant. Its full name is antifreeze coolant, which, as the name suggests, is a type of coolant with antifreeze properties. It is primarily used in liquid-cooled engine cooling systems, with its main function being to prevent the coolant from freezing and expanding in cold winter conditions, which could crack the radiator and damage the engine cylinders. However, it is important to note here: do not assume that just because the name includes the word "antifreeze," it is only suitable for winter use. Some drivers in southern regions might mistakenly believe that since their climate does not experience snow or ice, they can neglect antifreeze.

Coolant equals water plus antifreeze: Coolant refers to the liquid that can cool down the engine, which can be either water or antifreeze. Water is a very low-grade coolant and is also limited by seasons. The full name of coolant is antifreeze coolant (currently referred to as coolant or antifreeze in the market), meaning it is a coolant with antifreeze properties. Whether in scorching heat or freezing cold, cars cannot do without coolant. Proper use of coolant not only protects the engine's cooling system and improves heat dissipation but also enhances engine efficiency and extends its service life.

Engine coolant should be replaced every two to three years, but if a higher quality coolant is selected and there are no leaks in the engine cooling system, the replacement interval can be extended. The basic indicators of coolant are freezing point and boiling point. The market offers antifreeze with freezing points of -15°C, -25°C, -30°C, -40°C, -50°C, etc. Generally, it is advisable to choose one with a freezing point at least 10°C lower than the lowest temperature in your region.

Coolant plays a crucial role: it is a liquid that protects the engine cooling system from rust and corrosion. Its functions include effectively inhibiting scale formation, preventing radiator overheating, providing long-term comprehensive protection for the radiator, and lubricating components such as the water pump and thermostat. Coolant primarily consists of three parts: water + antifreeze + additives. Based on the different antifreeze components, it can be categorized into three types: alcohol-based, glycerol-based, and ethylene glycol-based coolants.

Through the above introduction, car owners have gained a better understanding of the role and importance of coolant and antifreeze. As winter approaches, while keeping yourself warm, don't forget to protect your beloved car from freezing. The most basic indicators for selecting antifreeze are its freezing point and boiling point, especially during autumn and winter—the lower the freezing point, the better. The freezing point of the chosen antifreeze should ideally be at least 10°C below the local minimum temperature. Never dilute antifreeze with water! Maintaining good vehicle condition undoubtedly adds an extra layer of safety to your driving experience.